Hamamatsu Photonics C9525 SERIES User manual

@X4-0047-5
－ 1 －
INSTRUCTION MANUAL
REGULATED HIGH-VOLTAGE DC POWER SUPPLY
C9525 SERIES
HAMAMATSU PHOTONICS K.K.
To use this product safely:
This product generates high voltage which may cause electrical shock or damage to the
connected equipment if not handled correctly. To use this product correctly and safely, be
sure to read this manual carefully to fully understand its contents. During installation
and operation of this product always follow the instructions explained in the "Essential
safety precautions" sections as well as "WARNING" and "CAUTION" instructions listed
in the text of this manual.
Please acknowledge that we can accept no liability for damage, loss or trouble arising
from failure to comply with precautions and instructions in this manual.

@X4-0047-5
－ 2 －
Safety alert symbols and signal words
The following safety alert symbols and signal words are used in this manual and in warning
labels on the product to alert you to caution points when using this product. Make
sure you fully understand the meaning of each signal word and comply with the
instructions.
Alert symbol and signal words
WARNING
"WARNING" indicates a potentially hazardous situation
which, if not avoided, could result in death or serious
injury.
CAUTION
"CAUTION" indicates a potentially hazardous situation
which, if not avoided, could result in minor or moderate
injury or damage to the equipment or software.
Pictorial signs
Electrical shock hazard
A high voltage is present.
Protective ground terminal
AC (Alternating current)
Power ON
Power OFF

@X4-0047-5
－ 3 －
Essential safety precautions
WARNING
■Do not remove the cover of this product.
Do not remove the cover and panels of this product. Do not disassemble or modify any
part of this product. Doing so may cause electrical shock or fire.
Before connecting or disconnecting the cables from the equipment, always first turn off
the power switch. Touching internal parts while the power is still supplied is hazardous
and can result in electrical shock.
■Warnings when handling the power supply
Use the AC power cable that comes with this product.
Always connect the AC power cable to a grounded 3-prong AC outlet. Using a
non-grounded AC outlet or extension cord with no ground wire will disable the protective
function and increase the risk of electrical shock or fire. If connecting to a 3-prong AC
outlet is not possible, use the supplied 3P/2P converter plug and securely ground the unit
by using the grounding lead coming out of the 3P/2P converter.
Do not cut the protective grounding wire in this product or AC power cable. Do not
remove the wire on the protective grounding terminal. Doing so may cause electrical
shock or fire.
When plugging or unplugging the power cable, always first make sure that the power
switch is off and then push or pull gently while gripping the plug itself. Do not push or
pull on the cable itself. At this point, avoid handling the cable with wet hands. Doing so
may cause electrical shock or malfunctions.
Do not scratch, damage or tamper with the cable and avoid placing any heavy objects on
it. Operating with a damaged cable may result in electrical shock or fire.
When using the high-voltage output receptacle, always keep a high-voltage output cable
with an SHV plug connected to that receptacle. Failure to do so may cause electrical
shock if a high voltage is accidentally applied.
If using a high-voltage cable instead of the high-voltage output cable that was supplied,
make sure the cable can withstand more than the required high voltage. Using a cable
with a low breakdown voltage may cause electrical shock or malfunctions.
When a high voltage is applied, never touch the high-voltage output receptacle of this
product or high voltage parts of the connected equipment with bare hands or conductive
items. Touching such parts is extremely hazardous and can result in electrical shock.
When plugging or unplugging the high-voltage output cable with an SHV plug, always
first make sure the high voltage output is off. Malfunctions may occur if the high voltage
output is on.
For the protection and safe use of the product and the system controlled by it, be sure to
follow the instructions and precautions on safety that are stated in this manual whenever
you handle the product. Take special note that if you handle the product in a manner that
violates these instructions, the protection functionality of the product may be damaged or

@X4-0047-5
－ 4 －
impaired. In such cases, HAMAMATSU does not guarantee the quality, performance,
function, and safety of product.
CAUTION
■Warnings about the installation environment
This equipment is designed and tested for use in an industrial environment.
If this equipment is used in residential areas, EMI (electro-magnetic interference) may
occur.
This equipment must not be used in residential areas.
Always use this product within the operating temperature range specified in this manual.
Avoid installing this product in such a way that the air vents on the top and bottom of this
product are blocked or air flow is prevented or ambient temperature rises excessively.
Operation in such locations may result in fire.
Always use this product within the operating humidity range specified in this manual. Use
caution when moving this product to a room where the humidity changes, since condensation
may occur. Do not handle the product with wet hands since this may cause electrical shock or
fire.
Do not operate this product in locations exposed to excessive dust, splashing from liquid such
as water droplets, vibration or fire. Operating it in such locations may result in fire.
Do not operate this product in locations where flammable or explosive gases or vapors are
present. Operation in such locations is extremely dangerous since it may cause explosions or
fire.
Do not insert metal objects or inflammable material into the air vent holes. Be careful not to
spill water on the product case. Doing so may cause electrical shock or fire.
Do not place this product on an unstable surface. Otherwise the product may fall over and
cause bodily injury.
■Warnings on abnormal operation
If smoke, fire or unusual odors are noticed while operating this product, immediately turn off
the power switch and unplug the power cable from the AC outlet. Also check that no other
equipment has caught fire and then consult our sales office.
■Warnings of discarding
The material in the C9525 contains a lead and its compound. Please follow the applicable
regulations regarding disposal of hazardous materials and industrial wastes in your country,
state, region or province.

@X4-0047-5
－ 5 －
Table of Contents
1. Overview................................................................................................................................. 6
2. Ratings and Specifications................................................................................................... 6
3. Accessories............................................................................................................................ 7
4. Part names and Descriptions............................................................................................... 8
4.1. Front panel...................................................................................................................... 8
4.2. Rear panel ....................................................................................................................... 9
4.3. Air intake vents ............................................................................................................ 10
5. How to Operate.................................................................................................................... 11
5.1. Preparation before power-on...................................................................................... 11
5.2. Making settings by panel key (Local mode).............................................................. 12
5.3. Operation by the remote (Usage of sample program) ................................................ 14
5.4. Operation by the remote（Various setting by commands）...................................... 18
5.5. Alarm display................................................................................................................ 32
6. Maintenance and Inspection .............................................................................................. 33
6.1. Maintenance and inspection................................................................................... 33
6.2. Repair............................................................................................................................ 33
7. Dimensional Outline............................................................................................................ 34
8. Warranty ............................................................................................................................... 35

@X4-0047-5
－ 6 －
1. Overview
The C9525 series is a regulated high-voltage DC power supply providing a maximum output
up to 2 kV and 1.8 mA (Polarity changes by a suffix.). The all-solid-state circuit configuration
using a DC-DC converter ensures high stability and reliability. The output voltage can be
continuously adjusted from 0 V through the maximum and is displayed on the 4-digit panel
meter with high accuracy. An SHV receptacle for output on the rear panel can be used to
operate a photomultiplier tube, proportional counter tube and other devices requiring a
stable source of DC high voltage. The C9525 is controllable from a PC (personal computer)
using the USB cable that comes supplied with the C9525.
2. Ratings and Specifications
・Input line voltage 100 to 240 VAC ± 10 %
・Input line frequency (50 / 60 Hz) ±1 Hz
・Power consumption 60 VA max(at maximum output and AC input 264V/60Hz)
・High voltage power supply section
· Output voltage range C9525-02, -03
C9525-52,-53 0 V to -2000 V DC (guaranteed range: -320 to -2000 V) 0 V to +2000 V DC (guaranteed range: +320 to +2000 V)
· Maximum output current 1.8 mA
· Line regulation Within ±(0.005 % +10 mV) for ±10 % line voltage change
· Load regulation Within ±(0.03 % +50 mV) for 0 to 100 % load change
· Ripple(Typ.) 0.003% +20 mV p-p (at maximum output)
(including induction hum)
· Long-term stability(Typ.) ±(0.02 % +10 mV) per 8 hours (after one hour of preheat)
· Temperature coefficient(Typ.) 0.01 %/C
· Protection circuit Uses constant current circuit to protect from overload or short
circuit.Automatic reset
· High voltage output receptacle SHV receptacle (rear) × 1
· High voltage output display 4-digit LCD
· Voltage display accuracy Within ±(0.1 % +2 V)
・±5 V power supply section
· Output voltage range ±4.75 V to ±5.25 V (fixed)
· Maximum output current 500 mA
· Line regulation Within ±0.1 % for ±10 % input voltage change
· Load regulation Within ±1 % for 0 to 100 % load change
· Ripple Within ±0.06 %p-p
· Drift Within ±0.05 %/h (after 30 minutes of preheat)
· Temperature coefficient Within ±0.01 %/C
・±15 V power supply section
· Output voltage range ±14.25 V to ±15.75 V (fixed)
· Maximum output current 200 mA
· Line regulation Within ±0.1 % for ±10 % input voltage change
· Load regulation Within ±0.5 % for 0 to 100 % load change
· Ripple Within ±0.02 %p-p
· Drift Within ±0.05 %/h (after 30 minutes of preheat)

@X4-0047-5
－ 7 －
· Temperature coefficient Within ±0.05 %/C
・Operating temperature and humidity range 0 C to +40 C, below 90 % RH (no condensation)
・Performance guaranteed termperature and
humidity range +5 C to +35 C, below 80 % RH (no condensation)
・Storage temperature and humidity range -20 C to +60 C, below 85 % RH (no condensation)
・Dimensions 246 (W) × 70 (H) × 312 (D) mm
・Mass Approx. 3 kg
・Usage environment Location : Indoor
Altitude : Below 2000 meters
Overvoltage category : II
Pollution degree : 2
IP code : IP20
・Applicable safety standards
EMC directive
Safety standard
IEC61326-1:2005 Group 1, ClassA
IEC61010-1:2010
3. Accessories
･AC power cable (length: 2 m).........................................................................1
･High voltage cable E1168-17 (length: 1.5 m, with SHV plug)........................1
･USB cable (length: 1.5 m, with filter) ..............................................................1
･DIN connector plugs .......................................................................................2
･3P/2P converter AC plug ...............................................................................1
･Instruction manual and sample software (CD)...............................................1
･Clamp filter (ZCAT2235-1030A manufactured by TDK Corporation) ............2

@X4-0047-5
－ 8 －
4. Part names and Descriptions
4.1. Front panel
①②③④ ⑤
①Power switch POWER
Turns AC input power on or off.
"○"….. Power "OFF"
"┃" …. Power "ON"
②LCD display
Displays the set voltage, etc. The backlight is orange.
③Panel keys
Use these keys to set the output voltage, maximum voltage, etc. Also use these keys to
select the display item or increase or decrease the settings.
④High-voltage output switch OUTPUT
This is a toggle push switch. When this switch is pushed in, the high voltage output turns
"ON" and the green LED in the switch lights up. Pushing this switch again (switch
protrudes) turns "OFF" the high voltage output, and the green LED turns off.
⑤USB receptacle
Connects to the supplied USB cable when controlling the C9525 from a PC.

@X4-0047-5
－ 9 －
4.2. Rear panel
⑥⑦⑧ ⑨
⑥High-voltage output receptacle OUTPUT
This is the SHV receptacle for high voltage output.
WARNING
When using the high-voltage output receptacle, always keep a high-voltage output cable
with an SHV plug connected to that receptacle. Failure to do so may cause electrical shock if
a high voltage is accidentally applied.
⑦Low voltage output receptacle OUTPUT
These are the same type of DIN connector sockets for low voltage
output.
1: +5V, 2: -5V, 3: GND (for ±5V)
4: -15V, 5:+15V, 6: GND (For ±15V)
If you connect a DIN cable, please use an attached clamp filter.
Turn the cable once, and place the clamp filter near C9525 series
when you attach it.
⑧Air exhaust vents
These are air vents for the cooling fan.
If the rear panel side has a wall, have a distance of about 10 cm from a wall.

@X4-0047-5
－ 10 －
⑨AC power inlet LINE INPUT
Connects to the supplied AC power cable.
WARNING
Connect the AC power cable to a grounded 3-prong AC outlet. The wrong connection may
cause electrical shock or fire.
4.3. Air intake vents
Air intake vents are provided on the upper cover of
this product. Do not block these vents or drop
foreign objects through these vents.

@X4-0047-5
－ 11 －
5. How to Operate
5.1. Preparation before power-on
1. Check that the power switch ①is "OFF" ("○" side).
2. Set the high voltage switch ⑥to "OFF".
3. Connect the supplied AC power cable to theAC power inlet ⑨on the rear panel.
4. Plug theAC power cable into a 3-slot AC power outlet.
If connecting to a 3-prong AC outlet is not possible, use the supplied 3P/2P converter plug and
securely ground the unit by using the grounding lead coming out of the 3P/2P converter.
5. Connect the supplied high-voltage output cable (E1168-19 etc.) to the SHV high-voltage
output receptacle ④on the rear panel, and then connect that cable to a load.
When the above preparation is complete, set the power switch ①to "ON" ("┃" side).
Check that the LCD panel ③shows the following initial screen.
- 0 V O F F e t c .
1 0 00 V m a x . R e s e t
CAUTION
If the power switch is turned ON while the high voltage switch is "ON" the LCD panel shows the
following message, and the high-voltage output switch LED flashes.
P l e as e t u r n o f f
H V _ OU T s w i t c h !
In this state, the high voltage output is 0V, and the panel keys and PC are inoperable. To clear
this state and display the initial screen, press the high voltage output switch to turn it OFF.
When using a high-sensitivity device such as a photomultiplier tube, avoid sharply increasing the
high voltage. For example, first presetting the voltage to within 500 V, turning on the
high-voltage output switch, and then slowly increasing the voltage is recommended in order to
protect the device.
Likewise, when turning off the high voltage output, first reducing the high voltage to 500 V is
recommended.
If the high-voltage output current exceeds 2 mA or the output is shorted, the protective circuit
functions to lower the output voltage. In this case, immediately turn off the high voltage and
then adjust the load so that the output current falls below 2 mA.

@X4-0047-5
－ 12 －
5.2. Making settings by panel key (Local mode)
■Display items and initial values
- 0 V O F F e t c .
1 0 00 V m a x . R e s e t
1）High voltage (upper left): 0V, OFF, cursor position (100ths digit)
2）Maximum voltage (lower left): 1000 V max.
3）etc. (upper right)
1. LCD contrast: 5 (adjustable from 0 to 9)
2. LCD backlight: ON
3. High voltage switch LED: ON
4）Reset (lower right)
■How to use the panel keys
1）Press the Up/Down keys to increase or decrease the value of
the display item where the cursor is positioned. Use the
Right/Left keys to move the cursor to another digit of the
display item.
2）To move the cursor to another item on the LCD, hold down the
SET key in the center between the panel keys long enough.
The cursor then moves to another display item in the specified order (1→2→3→4→1).
When the cursor has moved to the target item, release the SET button.
The display might freeze if you rapidly repeat pressing the same key since it cannot
keep up pace with your setting speed. If that happens, press another key to restore the
normal state.
■To set a high voltage
1）On the initial screen after the power is turned on, the cursor appears on the 100ths
digit of the high voltage item.
-0 VO F F e t c .
1 0 0 0 V m a x . R e s e t
2）Press the Up/Down keys to increase or decrease the voltage value. Use the Right/Left
keys to move the cursor to another digit.
Any value exceeding the maximum voltage cannot be set.
3）When the desired high voltage is displayed, the setting is complete. There is no need
to press the SET key.
4）Press the high-voltage output switch to turn it on.
The LCD display turns on and the green LED in the switch lights up.
Note that the green LED does not light up if the high-voltage output switch LED is set
to OFF.

@X4-0047-5
－ 13 －
■To set a maximum voltage
When using a photomultiplier tube, applying a high voltage in excess of the rated value might
cause a discharge in the tube and deteriorate the device characteristics. Set a maximum voltage
to protect the photomultiplier from an excessively high voltage that might be set by mistake.
1）Hold down the SET key until the cursor moves to the maximum voltage item (lower
left).
- 0 V O F F e t c .
1 0 0 0 V m a x . R e s e t
2）Press the Up/Down keys to increase or decrease the voltage value. Use the Right/Left
keys to move the cursor to another digit.
3）When the desired maximum voltage is displayed, the setting is complete. There is no
need to press the SET key.
■To set other items (etc.)
1）Hold down the SET key until the cursor moves to the "etc." item (upper right).
- 0 V O F F e t c .
1 0 0 0 V m a x . R e s e t
2）Pressing the SET key displays the LCD contrast setting screen.
Use the Up/Down keys to increase or decrease the contrast while viewing the screen
display.
Co n t r a s t o f L C D
5 1 / 3
3）Pressing the SET key again displays the LCD backlight setting screen.
Select ON or OFF with the Right/Left keys.
Ba c k L i g h t o f L C D
ON / O F F 2 / 3
4）Pressing the SET key once more displays the high-voltage output switch LED setting
screen.
Select ON or OFF with the Right/Left keys.
LE D o f O u t p u t - S W
ON / O F F 3 / 3
5）Pressing the SET key again to return to the screen of step 1).
■Reset
1）Hold down the SET key until the cursor moves to the "Reset" item (lower right).
- 0 V O F F e t c .
1 0 0 0 V m a x . Re s e t
2）Press the SET key again to reset to the same state as when the power was turned on.
- 0 V O F F e t c .
1 0 0 0 V m a x . Re s e t

@X4-0047-5
－ 14 －
5.3. Operation by the remote (Usage of sample program)
The C9525 power supply can be controlled using the accessory program "C9525_control.exe"
that comes with the C9525.
This accessory program is an executable format file (for Windows) created using Visual BASIC
6.0.
Prepare a PC (personal computer) with Windows 2000 or later version OS installed. Using a PC
that runs on (Windows XP) is recommended.
Connect the C9525 to the PC using the USB cable that comes with the C9525.
To use the accessory program, install it into the PC with the procedure described below.
If Visual BASIC 6.0 is not installed in the PC you are going to use, then install Visual Basic 6.0 SP6
Runtime Library (Microsoft).
The installer pops up by starting "setup.exe". Complete the installation by following the
instructions that appear on the PC screen.
Install the VCP driver (FTDI: Future Technology Devices International Ltd.) for USB control.
1）Disconnect the LAN cable (if connected) from the PC.
The driver cannot be installed when the LAN cable is connected. If the PC is
connected to Internet via a dial-up line, disconnect "Control Panel" - "Network
Connection".
2）Connect the USB cable to the PC.
3）When the Wizard for driver installation starts, specify the folder that contains the driver
to install. The driver should be decompressed in advance since it came compressed.
4）AUSB serial port is now added to the COM port. Check the number by opening
"Control Panel" - "System" – "Hardware" – "Device Manager".
For detailed information, refer to the OS Installation Guide.
When the accessory program has started while the C9525 power is turned on, the following
screen appears.

@X4-0047-5
－ 15 －
The C9525 can be controlled by using the buttons and slide bars on this screen.
■To set a high voltage
Clicking the small arrows at the ends of the horizontal scroll bar changes the
voltage value in ±1 V steps and clicking the slide bar changes the voltage
value in ±100 V steps. The upper voltage setting is limited by the maximum
voltage setting.After adjusting to the desired high voltage, click the SET
button to enable that setting.
■To set a maximum voltage
Clicking the small arrows at the ends of the horizontal scroll bar changes the
voltage value in ±1 V steps and clicking the slide bar changes the voltage
value in ±100 V steps.After adjusting to the desired high voltage, click the
SET button to enable that setting.
■To set the step voltage
Clicking the small arrows at the ends of the horizontal scroll bar changes the
voltage value in ±1 V steps and clicking the slide bar changes the voltage
value in ±100 V steps.After adjusting to the desired step voltage, click the
SET button to enable it.
■To read the monitor voltage Vmon
Click the READ button under "Vmon" to read and display the monitor voltage.
■To read the low-voltage power supply voltages
Click the READ button under "AUX" to read the low voltages (±5V and ±15V)
output from the connector on the rear panel.
The voltage values are shown in the Response box.
■To set the LCD contrast
Move the horizontal slide bar to adjust the LCD contrast.
After adjusting the contrast, click the SET button to enable that
contrast.
■To set the LCD backlight to ON/OFF
Click the ON/OFF button to switch the backlight on or off.
■To set the high-voltage output switch LED to ON/OFF
Click the ON/OFF button to switch the LED on or off.

@X4-0047-5
－ 16 －
■To read the currently set values
Click the UPDATE button to read and display the currently set values.
■To reset
Click the SET button to return to the same state as when the power was turned
on. (This enters Local mode that also allows panel key operation.)
■To control the high voltage output
Click the ON/OFF button to turn on or off the high voltage output that was set.
■To read, write, or erase the setting (flash memory)
Any setting can be stored in a flash memory (0 to 5).
Memory # 0 is selected at the time of startup. High voltage can
also be output (ON) at startup.
Select the desired memory # and click the READ or WRITE or
ERASE button as needed.
To erase the settings stored in all memories, select “A” and click the ERASE button.
■To read the information
Click the “Read Inf.” button to read Type No. , Serial No. and Firmware Revision.
The information is shown in the Response box.
■To display the command log
Click the ON button to display the send/receive commands used to make various settings. You
may refer to this log when creating control commands on your own. Press the OFF button to
hide the log.
■To search for the VCP number used for USB
Click the SEARCH button to search for the VCP number.
This function is available on Windows 2000 or later versions.
If your PC uses an earlier Windows version, enter the VCP number.
■To quit the program (QUIT)
Click the QUIT button to reset and exit the control program.
Remote mode will not be released if the program was terminated without
using this QUIT button. To next use the C9525 in Local mode, use the panel
keys to enter Local mode (See below).
■To display the help screen (HELP)
Click the HELP button to display the Help screen.
You can refer to the instructions in Help on how to use this program and
control command list.

@X4-0047-5
－ 17 －
■C9525 LCD display example in Remote mode
-1 0 0 0 V O N
R E M O T E
■To switch from Remote mode to Local mode by using the panel keys.
Press the Right and Left keys simultaneously to enter Local mode.
If the above was displayed in Remote mode, then it now changes to the following display.
-1 0 0 0 V O N e t c .
1 0 0 0 V m a x . R e s e t
Before switching to Local mode make sure that the high voltage output is off.
If switched while the high voltage output is on, then the mechanical on/off status of the
high-voltage output switch will be reversed. If this is reversed, reset the C9525 to return to
the same state as when power was turned on.

@X4-0047-5
－ 18 －
5.4. Operation by the remote（Command Set）
When creating your own program by utilizing control commands, the following command
is available. In all commands, it is necessary to be terminated by CR(Carriage Return).
Refer to the control command list shown below.
Success
Failure
Set the high voltage output V<value1><value2><CR> value1：0h～14h
value2：0h～63h VA BC,BA
Set the maximum voltage M<value1><value2><CR> value1：0h～14h
value2：0h～63h VA BC,BA
Set the step voltage S<value1><value2><CR> value1：0h～14h
value2：0h～63h VA BC,BA
Set LCD Contrast C<value><CR> value：0h～9h VA BC
,
B
A
Set the hi
g
h volta
g
e out
p
ut ON/OFF O<value><CR> value：0h or 1h VA BC
,
B
A
Set LCD backli
g
ht ON/OFF B<value><CR> value：0h or 1h VA BC
,
B
A
Set the hi
g
h volta
g
e out
p
ut switch LED ON/OFF L<value><CR> value：0h or 1h VA BC
,
B
A
Set device mode : remote or local
Q
<value><CR> value：0h or 1h VA BC
,
B
A
Read the device settin
g
R<CR> None 13 b
y
te data BC
Read the hi
g
h volta
g
e monitor value T<CR> None 2 b
y
te data BC
Read the low volta
g
e out
p
ut (±5
V
，±15V)
A
<CR> None 8 b
y
te data BC
Reset the device to the condition at
p
ower-on. D<CR> None VA BC
Read Information F<CR> None 24 b
y
te data BC
Operation Command Argument Response
The communication setting of RS-232C is as follows:
Baud rate : 9600 bit per second
Data length : 8 bits
Parity bit : None
Stop bit : 1 bit
Flow control : None
The details of each command are described from the next page.

@X4-0047-5
－ 19 －
■High voltage output setting
You can set the high voltage output.
The command length of the high voltage setting is 4 byte.
Syntax：V<value1><value2><CR>
Notes:
Input value1 and value2 in binary.
The range of value1 is from 0 to 20.
The range of value2 is from 0 to 99.
Highvoltageoutput= <value1> x 100 + <value2>
High voltage output is limited to maximum voltage or less.
As shown below, the command line can be also described in binary.
<56h><value1><value2><0Dh> ※hexadecimal representation
For example, in the case of Visual Basic, when you want to set the
high voltage output at 1000V, you can write as follows;
Dim Cmd
Cmd = “V” + Chr(10) + Chr(0) + Chr(13)
or
Dim Cmd(3) As Byte
Cmd(0) = 86 : Cmd(1) =10 : Cmd(2) = 0 : Cmd(3) = 13
Response：command success
⇒ “VA”(Valid Argument) is returned.
commandfailure
BadCommand
⇒ “BC” is returned.
BadArgument
⇒ “BA” is returned.

@X4-0047-5
－ 20 －
■Maximum voltage setting
You can set the maximum voltage.
The command length of the maximum voltage setting is 4 byte.
Syntax：M<value1><value2><CR>
Notes:
Input value1 and value2 in binary.
The range of value1 is from 0 to 20.
The range of value2 is from 0 to 99.
Maximum voltage = <value1> x 100 + <value2>
Maximum voltage is limited to 2000V or less.
As shown below, the command line can be also described in binary.
<4Dh><value1><value2><0Dh> ※hexadecimal representation
For example, in the case of Visual Basic, when you want to limit
the high voltage output to 1000V or less, you can write as follows;
Dim Cmd
Cmd = “M” + Chr(10) + Chr(0) + Chr(13)
or
Dim Cmd(3) As Byte
Cmd(0) = 77 : Cmd(1) =10 : Cmd(2) = 0 : Cmd(3) = 13
Response：command success
⇒ “VA”(Valid Argument) is returned.
commandfailure
BadCommand
⇒ “BC” is returned.
BadArgument
⇒ “BA” is returned.